Microfacies of oligocene deposits in south–southeast of Mollababa Village (Mus)

This study aims to describe the microfacies and depositional environments of the Rupelian - Chattian (Oligocene) aged carbonate and clastic rocks of Kelereş and Kazanan formations in the south-southeast of Mollababa village (SE Muş). In the study area, Rupelian (Oligecene) aged Kelereş formation which consists of siltstone-claystone with sandstone intercalations, sandy limestone with bentic foraminiferas, calcareous sandstone interbedded with siltstone-claystone from bottom to top which overlies upper Eocene (?) unconformably and Chattian (upper Oligocene) aged Kazanan formation which consists of sandstones, sandy limestones, calcarenites which contain bentic foraminiferas and macrofossils outcrop. Aquitanian (lower Miocene) aged Mollababa formation overlie these formations conformably. In the study area, three stratigraphic sections as Kelereşdere, Taşlıca and Gültepe were measured. A total of 506 m thick sedimentary sequence was measured for Kelereş and Kazanan formations in these sections. A total of 69 rocks and washing samples were collected from these sequences. As a result of the micropaleontological and sedimentological studies of the thin sections of these specimens, siltstone – sandstone, calcareous sandstone with benthic foraminifera and macrofossil grains, boundstone with Corals and Bryozoa, packstone - grainstone with Lepidocyclina and macrofossil grains, packstone with Milioliidae and Rotaliidae, calcarenite with Nummulites and macrofossil grains microfacies were described. Depositional environments of these microfacies range from shallow marine to open shelf environment.